Sumitomo Rubber Industries says that it has developed a new technique for predicting noise generated by the combined vibration of the tyres and vehicle. In developing this technique, it used a tyre rolling motion simulation that assumes tyres of a moving vehicle. Applying the new method will enable both tyre and vehicle manufacturers to reduce noise generated by their products.
Reducing noise in a vehicle is expected to enhance passenger comfort while the new technique will shorten delivery time by cutting development manhours and save resources by reducing physical prototypes.
It adds it will draw on this process to promptly respond to various user needs, including the model-based development of tyres and vehicles and to pursue more environmentally friendly tyre development.
Road noise generated when a stimulus from road surface irregularity is transmitted to the vehicle through the tyres while the vehicle is traveling, is one of the crucial factors that determine passenger comfort. EVs, which are expected to spread going forward, generate no engine sound which makes road noise more noticeable. This means the reduction of road noise more important than before.
Various standalone tyre simulation techniques have been used in the past to reduce roadway noise. It was difficult to predict, however, the performance of the vehicle/tyre combination as the noise generated is through coupling of the tyre and vehicle.